TCS Technical Interview Questions

Hi I would like to have the technical interview questions which are generally asked in the Technical Interview round for TCS?

[Saksham]

Here are the some of the questions which are generally asked in the Technical round of the interview:

What is the value of the variable a3 after execution of the following code?
String a1,a2,a3; a1=56 a2=68< a3=a2+a1

6856
5668
124
error

If the int variables int1 and int 1 conatin values 5 and 2 respectively, then the vlue of (double)(int1/int 2)

0.25
0
2.0
2.5

What are th output of following code:
for(x=10;x<+ 50;x+=10) y= x/2; cout<< y ;

25
50
12
10

Write one statement equivalent to the following two statements:
x=sqr(a);
return(x);

return(sqr(a));
printf("sqr(a)");
return(a*a*a);
printf("%d",sqr(a));


The rand() built in library function

is a true random number generator
returns positive double values
is a pseudo-random number generator
returns a different sequence of values each time it is run.

What is the output of the following code?
x=15;y=0; if(x=10) y=7; else y=1; cout<< y;

7
0
1
6

Other question which are asked are given below:


• Write a program to find factorial of a number using recursive function.
• Describe 2 different ways to concatenate two strings.
• Give syntax for SQL and ORACLE joins.
• How is modularity introduced in C++?
• What is the difference between a Stack and a Queue.
• Give example to differentiate between call by value and call by reference.
• Why the usage of pointers in C++ is not recommended ?
• What do you mean by Data mining?
• Write a program to reverse a string.